The biological truth will out

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Getting your DNA read could bring many health and other benefits. But it will also bring a few surprises

Who’s your daddy? It’s a question most of us can answer without thinking. A
few people know that they were adopted, or conceived with donated sperm, or
even that they were the unexpected product of a one-night stand. But we
generally introduce our fathers with a pretty high degree of confidence.

The experience of Sir Paul Nurse, the Nobel laureate, shows, however, that it
isn’t always so simple. When he was appointed President of Rockefeller
University in New York in 2003, Sir Paul was initially turned down for a
green card. On tracking down his original birth certificate, he discovered